1
verb + unlawfully
unlawfully 修饰动词时通常紧跟在动词后，表示“以不合法的方式”。
They acted unlawfully.
他们的行为不合法。
不合法地；非法地
先理解核心含义，再看它在真实句子里的用法。
不合法地；非法地
not conforming to the law
They acted unlawfully.
他们的行为不合法。
以不符合法律的方式；非法地。
In a manner not conforming to the law.
The company was accused of unlawfully collecting customer data.
该公司被指控非法收集客户数据。
He was arrested for unlawfully entering the building after hours.
他因在下班后非法进入该建筑而被捕。
The court ruled that the evidence had been unlawfully obtained.
法院裁定这些证据是非法获取的。
unlawfully 修饰动词时通常紧跟在动词后，表示“以不合法的方式”。
They acted unlawfully.
他们的行为不合法。
此结构常用于法律语境，强调行为违反法律。
The files were unlawfully deleted.
这些文件被非法删除了。
Not this
The company acted unlawful.
Use this
The company acted unlawfully.
act 是行为动词，需要副词修饰动词，unlawfully 才是副词；unlawful 是形容词，只能修饰名词，不能修饰动词。
Not this
It is unlawfully to sell these products.
Use this
It is unlawful to sell these products.
is 是系动词，后面接形容词作表语修饰主语；unlawfully 是副词，不能作表语，应改用形容词 unlawful。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
被非法杀害
The coroner ruled that she was unlawfully killed.
验尸官裁定她系被非法杀害。
被非法拘留
He was unlawfully detained for two weeks.
他被非法拘留了两周。
非法取得的
The court refused to admit the unlawfully obtained evidence.
法院拒绝采信非法取得的证据。
非法居留的
Immigrants unlawfully present in the country face deportation.
非法居留在该国境内的移民面临被驱逐出境。
非法行事
Police officers must not act unlawfully.
警务人员不得非法行事。
非法在逃
The escaped prisoner is still unlawfully at large.
越狱的囚犯仍非法在逃。
Use unlawfully naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
un = 不，law = 法律，fully = 地；把法律书推开，不按法律行事 → 不合法地。
语域：formal 常见场景：法律文书、新闻报道、正式声明 unlawfully 是正式用词，通常用于法律或正式书面语境；日常口语中更常说 illegally。
与 unlawfully 押韵的有 lawfully、awfully（都包含重读元音 /ɔː/ 后接 /fəli/）。注意 dutifully、beautifully、peacefully、willfully 拼写以 -fully 结尾，但重读音节元音不同，并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.